Coronal dye penetration of the apical filling materials after post space preparation

Ravanshad, Shohreh; Torabinejad, Mahmoud

doi:10.1016/0030-4220(92)90359-x

Cited by 28 publications

(18 citation statements)

References 17 publications

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“…Post space preparation is another major factor at play in the fracture resistance of ETT. Over-preparing the canal space for a large post or inserting a post too deeply can decrease the fracture resistance of ETT or affect their apical seal [9][10][11][12] . Traditionally, it is suggested that the post length be at least equal to the height of anatomic crown 13) .…”

Section: Introductionmentioning

confidence: 99%

Effect of fiber post length and bone level on the fracture resistance of endodontically treated teeth

Mobilio

Borelli

Sorrentino³

et al. 2013

Dent. Mater. J.

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This study evaluated the combined influence of horizontal bone loss and post length on the fracture resistance of endodontically treated teeth (ETT). Twenty premolars were endodontically treated and divided into four groups of two different post insertion depths (5 and 7 mm) and two alveolar bone levels from cement-enamel junction (2 and 5 mm). After posts (RelyX Fiber Post) were cemented using a self-adhesive resin cement (RelyX Unicem Aplicap) and cores were built up (Filtek Supreme XT Universal Restorative, 3M ESPE, USA), cobalt-chrome copings were luted to each prepared tooth. All specimens were subjected to thermocycling and mechanical loading until fracture occurred. Mean fracture loads (N) were 1,445±342.2 (2 mm bone level/5 mm depth), 1,516±413.4 (2 mm bone level/7 mm depth), 1,736.4±1113.8 (5 mm bone level/5 mm depth), 1,038.6±600.2 (5 mm bone level/7 mm depth). No significant differences were found. Therefore, bone level and post length did not seem to influence the fracture resistance of ETT.

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Section: Introductionmentioning

confidence: 99%

Effect of fiber post length and bone level on the fracture resistance of endodontically treated teeth

Mobilio

Borelli

Sorrentino³

et al. 2013

Dent. Mater. J.

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“…The advantage of this technique for our study was that we were able to measure the dye, and the total leakage of a sample could be counted from a single section. 23,24 Yared et al evaluated the dimensional stability and sealing ability of the vertical compaction of gutta-percha with standard and extended working time ZOE root canal sealers and found no significant difference in outcomes. 25 Meanwhile, Chen and Chang reported that vertical compaction obturation technique is superior to the lateral compaction method in terms of less dye leakage during post-space preparation.…”

Section: Discussionmentioning

confidence: 97%

The effect of immediate and delayed post-space preparation using extended working time root canal sealers on apical leakage

Chen

Chang

2013

Journal of Dental Sciences

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KEYWORDS apical seal; extended working time root canal sealers; post-space preparation; zinc oxideeeugenol sealerAbstract Background/purpose: The purpose of this study was to compare the effect of different post-space preparation time intervals on the apical sealing ability of filling material using two different extended setting time root canal sealers. Materials and methods: A total of 100 single-canal teeth were incrementally cleaned with crown-down instrumentation using K3 rotary nickeletitanium instruments and randomly divided into four groups. There were 30 teeth in the experimental groups (Groups 1e3) and 10 teeth in the control group (Group 4). We obturated the teeth using a warm gutta-percha vertical compaction technique with pulp canal sealer (Group 1), Tubli-Seal EWT (Group 2), and pulp canal sealer EWT (Group 3). We then stored all the specimens in 100% humidity at 37 C for 1 week. We used heated pluggers to create post space at three different intervals postobturation (i.e., immediately after obturation, on Day 3, and on Day 7), leaving 5-mm gutta-percha filling at the apices. We then immersed the teeth in 2% methylene blue solution for 72 hours, and finally sectioned them longitudinally into two halves. The amount of apical dye leakage was measured under a stereomicroscope. Results:The results showed no significant difference (P > 0.05) in dye leakage between the standard and extended working time root canal sealers. Apical leakage tended to increase more severely in Group 1 at the three different intervals was considered. Conclusion: Extended working time root canal sealers do not affect microleakage results using a warm gutta-percha vertical compaction technique. The sealing ability of extended working

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“…Studies comparing india ink to methylene blue have indicated that methylene blue penetrates deeper than india ink along root canal fillings because of its lower molecular weight (21) and also that the end points of leakage are not as clear (22). Methylene blue particles may also dissolve during the decalcification and clearing processes (23). However, the clinical relevance of a very small particle tracer is questionable as these molecules are smaller than bacteria and do not simulate in vivo conditions (24,25).…”

Section: Discussionmentioning

confidence: 99%

Sealing capacity in vitro of thermoplasticized gutta‐percha with a solid core endodontic filling technique

Valli

Rafeek

Walker

1998

Dental Traumatology

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8 Munksgaard, 1998. Abstract -This study assessed the sealing capacity of two endodontic gutta-percha filling techniques. Thirty-four single-rooted fully developed teeth were endodontically accessed, instrumented and randomly divided into two experimental groups (n=12) and two control groups (~5 ) .In Group A, root canals were obturated using a solid core thermoplastic technique (Densfil), in Group B and Group C (negative control) canals were obturated with laterally condensed gutta-percha, and in Group D (positive control) canals were left unobturated. AH-26 was used as the sealer. Two days later, the teeth were conventionally prepared for testing apical and coronal leakage, immersed in india ink for 5 days and subsequently cleared. The linear coronal and apical extent of dye penetration was measured under a light dissecting microscope. The mean apical leakage for Group A was 1.39 mm, and for Group B 2.76 mm, whereas the mean coronal leakage for Group A was 2.87 mm, and for Group B 4.03 mm. The differences between the groups were not statistically sigdicant (P'0.05).It has been established that endodontic treatment success depends on the root canal being well sealed by the endodontic filling, both apically (1) and coronally (2-6). Currently, there are several endodontic filling techniques available. The most accepted, and the standard with which all other techniques are compared, is lateral condensation of gutta-percha (7). One endodontic filling technique that has gained popularity is the application of thermoplasticized gutta-percha by means of a solid carrier. The sealing capacity of this filling technique has been investigated, however, with conAicting results (8-1 3). The majority of studies have assessed the sealing ability of this technique by testing apical leakage (1 1-13), but the seal at both the coronal and the apical levels has not been investigated.The aim of this in vitro study was to assess the coronal and apical seal provided by thermoplasticized

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Coronal dye penetration of the apical filling materials after post space preparation

Cited by 28 publications

References 17 publications

Effect of fiber post length and bone level on the fracture resistance of endodontically treated teeth

Effect of fiber post length and bone level on the fracture resistance of endodontically treated teeth

The effect of immediate and delayed post-space preparation using extended working time root canal sealers on apical leakage

Sealing capacity in vitro of thermoplasticized gutta‐percha with a solid core endodontic filling technique

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